\documentclass{standalone}
\usepackage{tikz}
\usepackage{ctex,siunitx}
\setCJKmainfont{Noto Serif CJK SC}
\usepackage{tkz-euclide}
\usepackage{amsmath}
\usepackage{wasysym}
\usetikzlibrary{patterns, calc}
\usetikzlibrary {decorations.pathmorphing, decorations.pathreplacing, decorations.shapes,}
\begin{document}
\small
\begin{tikzpicture}[>=latex,scale=1.0]
  % \useasboundingbox(0.9,0)rectangle(5.1,5);
  \draw [dashed](0,0) --(1.0,-2) ;
  \node at (-1.1,2.2){\sun};    
  \node at (1.1,-2.2){\sun};
  \draw [double=lightgray,fill=lightgray!30] (0,0) ellipse [x radius=1.5, y radius=0.6];
  \draw [dashed] (-1.0,2) --(0,0) ;
\end{tikzpicture}
\end{document}